Sweep-strap for looms.



l No. 737,266.

UNITED STATES Patented August 25, 1903.

PATENT OFFICE.

CHARLES P. NICHOLS, or ORANSTON, RII/ODE ISLAND.

swEEP-STRAP FOR Looms.

' SPECIFICATION formingpart of Letters Patent No. 737,266, datedAugust'25, 1903.

Application le'drDecember 1 2, 1901. Serial No.- 85,64:2. (No model.)`

T0 all whom it may 00h/cern.- A

Be it known that I, CHARLES P. NICHOLS, a citizen of the United States,residing at Cranston, in the county of Providence and State of RhodeIsland, have invented a new and useful Improvement inSwee'p-Straps forLooms, of which the following is a Specification.

This invention has reference to a device designed to take the place ofleather sweep straps or lugs used on looms.

The invention consists'in the peculiar. and novel construction and thecombination whereby the power of the sweep strap is brought to bear morecentrally on the pickerstick than heretofore, as will be more fully setforth hereinafter.

The object of the invention is to produce a more durable sweep strap orlug which can be adjusted lengthwise.

Figure l is a front view of a loom7 showing my improved sweep straps orlugs in connection with the Sweep-arms and picker-Sticks. Fig. 2 is aplan view of my improved sweepstrap, showing the buffers andpicker-stick in Section. Fig. 3 is a side view of the sweepstrap withthe loop partly broken away and showing the means of adjustablySupporting the sweep-strap on the picker-stick. Fig. 4L

is a detail sectional view through the center of the loop Showing themeans of adjusting and securing the loop to the sweep-arm. Fig. 5 is across-sectional view through the loop `of the sweepStrap,-showing thebuffers supported on the loop and one of the buffers eX- tended upwardto form a support for the sweep-strap on the picker-stick. Fig. 6 is asectional view throughthe end of the sweep-- arm and loop of thesweep-strap, showing the U-shaped bolt and bar for securing the ends ofthe sweep-strap to the sweep-arm.`

In the drawings, A A indicate the powerarms of a loom, operated in theusual way to throw a shuttle by the picker-sticks B Band the sweep-armsC C. The sweep-arm C, I make preferably of wood with the hole c at atits inner end to pivotally connect it to the end of the power-armA. AOnthefouter end I adjustably fasten the metal loop c with the attened endsc2 to the sweep-arm bythe U-shaped bolt c3 and the bar c4. The flattenedends 02 are provided with corrugations material.

ends c2 and on its outer ends the-nuts c7."

The bar c4 has two holes for the U-shaped bolt c3 and has the ribs as onits inner face. At the end of the metal loop c I support the buffers Don the loop by the holes del. (Shown in Fig. 5.) The buffer D is made ofthree or more flat pieces of leather or other suitable l The inner andouter pieces ld d are approximately square. The center piece d2 isextended upward and narrowed in width to form the strap d3 with theholes d4 to fasten it to the picker-stick bythe screw d5. The buffer I),formed by the plates d d and d2, is loosely mounted on the loop cintermediate the picker-stick.

To adjust thesweep lug or loop lengthwise, I loosen the nuts c7 c7 onthe U -shaped bolt c3. The loop c can then be moved longitudinally intothe position required and locked by tightening the nuts c7 c7 on thebolt c3. This forces the ribs c6 on the closed end of the bolt c3 andthe ribs 08y on the bar c4 into the grooves `to the sweep-arm. To adjustthe position of the sweep-lug on the picker-stick for different weightsof cloth, I provide the upwardlyextending buffer-strap d3 with a 'numberof holes d4, and by meansof these holes adjustably jfasten the strap d3to the picker-Stick by the screw d5.

By this construction the 'bearing of the sweep strap or lug` on thepicker-'stick is at all times uniform with the pull of the sweep-arm.The buers above and Vbelow the rounded loop or lug will bend backwardaccording to the position of the picker-stick. The lOop or lug being ofmetal will last for a very long time, while the buffers may be readilyrenewed as they become worn.

Having thus described my invention, I claim as new and desire to Secureby Letters Patent l. A sweep-strap, having a loop formed IOC from around piece of metal with flattened ends adjustable lengthwise on thesweep-arm and surrounding the pickerstick, corrugations formed on eachside of both of the flattened ends ofthe loop, a U-shaped boltextending` through the sweep-ar1n provided with eorrugations on the partextending over the end of the loop, and a bar provided with corrugationson one side, nuts on the ends of the bolt outside the bar for clampingthe flattened ends of the loop between the closed end of the bolt, theinside of the bar and the sweeparIn, as described.

2. In a sweep-strap for looms, the combination with the power-arm A andthe pickerstiok B, a sweep-arm C having the buier D at its outer end andthe hole c at its inner end to pivotally connect it to the picker-arm,the loop c' with flattened ends c2 having,` the corrugations c5 on theirinner and outer faces, the U-shaped bolt c3 with the ribs c and the barc* with the ribs c corresponding` to the corrugations on the loop endsc2, the nuts c7 on the ends of the bolt c3 and outside the bar c4, thebulfereplates d d and (Z2 with the holes CZ to support the buffer-plateson the loop c', the upwardlyextending strap Z3 from one of thebuffereplates having the holes dA1 and the screw d5 to adjustably fastenthe strap to the picker-stick, as described.

In v testimony Whereot1 I have signed my name to this speeication in thepresence of tWo subscribing Witnesses.

CHARLES P. NICHOLS.

Witnesses:

B. S. WEBSTER, J. A. MILLER, Jr.

